The Outlook Calendar integration in Workplace allows the automatic addition of a Teams link to meeting room bookings. Go to Settings > Integrations > Outlook and enable Add MS Teams link to Room bookings by default:
Purpose
With the setting enabled, employees will no longer have to click on the MS Teams toggle in the New Booking modal when booking a meeting room in the Web Portal. This is convenient if the organization uses MS Teams daily and you need a reliable way to record meetings in MS Teams without the concern of employees missing the toggle for some reason:
Disable MS Teams Meeting
Employees can still click and disable the toggle if they don't want to record the meeting in MS Teams.